21.Android 时间工具DateUtil
- Android 时间工具DateUtil
- String 转换 Date
- long 转换 String
- long 去除 时分秒
- 计算时间差
- 24小时制转12小时制
- Date 转换 String
- DateUtil全部源码
String 转换 Date
/** * String 转换 Date * * @param str * @param format * @return */
public static Date string2Date(String str, String format) {
try {
return new SimpleDateFormat(format).parse(str);
} catch (ParseException e) {
e.printStackTrace();
}
return new Date();
}
long 转换 String
/** * Date（long） 转换 String * * @param time * @param format * @return */
public static String date2String(long time, String format) {
SimpleDateFormat sdf = new SimpleDateFormat(format);
String s = sdf.format(time);
return s;
}
long 去除 时分秒
/** * long 去除 时分秒 * 时分秒全部为0 * * @param date * @return */
public static long getYearMonthDay(long date) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(date);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTimeInMillis();
}
计算时间差
/** * 获取目标时间和当前时间之间的差距 * * @param date * @return */
public static String getTimestampString(Date date) {
Date curDate = new Date();
long splitTime = curDate.getTime() - date.getTime();
if (splitTime < (30 * ONE_DAY)) {
if (splitTime < ONE_MINUTE) {
return "刚刚";
}
if (splitTime < ONE_HOUR) {
return String.format("%d分钟前", splitTime / ONE_MINUTE);
}
if (splitTime < ONE_DAY) {
return String.format("%d小时前", splitTime / ONE_HOUR);
}
return String.format("%d天前", splitTime / ONE_DAY);
}
String result;
result = "M月d日 HH:mm";
return (new SimpleDateFormat(result, Locale.CHINA)).format(date);
}
24小时制转12小时制
/** * 24小时制 转换 12小时制 * * @param time * @return */
public static String time24To12(String time) {
String str[] = time.split(":");
int h = Integer.valueOf(str[0]);
int m = Integer.valueOf(str[1]);
String sx;
if (h < 1) {
h = 12;
sx = "上午";
} else if (h < 12) {
sx = "上午";
} else if (h < 13) {
sx = "下午";
} else {
sx = "下午";
h -= 12;
}
return String.format("%d:%02d%s", h, m, sx);
}
Date 转换 String
public static String[] WEEK = new String[]{"天", "一", "二", "三", "四", "五", "六"};
private static final long ONE_SECOND = 1000;
private static final long ONE_MINUTE = ONE_SECOND * 60;
private static final long ONE_HOUR = ONE_MINUTE * 60;
private static final long ONE_DAY = ONE_HOUR * 24;
/** * Date 转换 HH * * @param date * @return */
public static String date2HH(Date date) {
return new SimpleDateFormat("HH").format(date);
}
/** * Date 转换 HH:mm:ss * * @param date * @return */
public static String date2HHmm(Date date) {
return new SimpleDateFormat("HH:mm").format(date);
}
/** * Date 转换 HH:mm:ss * * @param date * @return */
public static String date2HHmmss(Date date) {
return new SimpleDateFormat("HH:mm:ss").format(date);
}
/** * Date 转换 MM.dd * * @param date * @return */
public static String date2MMdd(Date date) {
return new SimpleDateFormat("MM.dd").format(date);
}
/** * Date 转换 yyyy.MM.dd * * @param date * @return */
public static String date2yyyyMMdd(Date date) {
return new SimpleDateFormat("yyyy.MM.dd").format(date);
}
/** * Date 转换 MM月dd日 星期 * * @param date * @return */
public static String date2MMddWeek(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
return new SimpleDateFormat("MM月dd日 星期").format(date) + week[dayOfWeek - 1];
}
/** * Date 转换 yyyy年MM月dd日 星期 * * @param date * @return */
public static String date2yyyyMMddWeek(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
return new SimpleDateFormat("yyyy年MM月dd日 星期").format(date) + week[dayOfWeek - 1];
}
DateUtil全部源码
public class DateUtil {
public static String[] WEEK = new String[]{"天", "一", "二", "三", "四", "五", "六"};
private static final long ONE_SECOND = 1000;
private static final long ONE_MINUTE = ONE_SECOND * 60;
private static final long ONE_HOUR = ONE_MINUTE * 60;
private static final long ONE_DAY = ONE_HOUR * 24;
/** * String 转换 Date * * @param str * @param format * @return */
public static Date string2Date(String str, String format) {
try {
return new SimpleDateFormat(format).parse(str);
} catch (ParseException e) {
e.printStackTrace();
}
return new Date();
}
/** * Date（long） 转换 String * * @param time * @param format * @return */
public static String date2String(long time, String format) {
SimpleDateFormat sdf = new SimpleDateFormat(format);
String s = sdf.format(time);
return s;
}
/** * long 去除 时分秒 * 时分秒全部为0 * * @param date * @return */
public static long getYearMonthDay(long date) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(date);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTimeInMillis();
}
/** * 获取目标时间和当前时间之间的差距 * * @param date * @return */
public static String getTimestampString(Date date) {
Date curDate = new Date();
long splitTime = curDate.getTime() - date.getTime();
if (splitTime < (30 * ONE_DAY)) {
if (splitTime < ONE_MINUTE) {
return "刚刚";
}
if (splitTime < ONE_HOUR) {
return String.format("%d分钟前", splitTime / ONE_MINUTE);
}
if (splitTime < ONE_DAY) {
return String.format("%d小时前", splitTime / ONE_HOUR);
}
return String.format("%d天前", splitTime / ONE_DAY);
}
String result;
result = "M月d日 HH:mm";
return (new SimpleDateFormat(result, Locale.CHINA)).format(date);
}
/** * 24小时制 转换 12小时制 * * @param time * @return */
public static String time24To12(String time) {
String str[] = time.split(":");
int h = Integer.valueOf(str[0]);
int m = Integer.valueOf(str[1]);
String sx;
if (h < 1) {
h = 12;
sx = "上午";
} else if (h < 12) {
sx = "上午";
} else if (h < 13) {
sx = "下午";
} else {
sx = "下午";
h -= 12;
}
return String.format("%d:%02d%s", h, m, sx);
}
/** * Date 转换 HH * * @param date * @return */
public static String date2HH(Date date) {
return new SimpleDateFormat("HH").format(date);
}
/** * Date 转换 HH:mm:ss * * @param date * @return */
public static String date2HHmm(Date date) {
return new SimpleDateFormat("HH:mm").format(date);
}
/** * Date 转换 HH:mm:ss * * @param date * @return */
public static String date2HHmmss(Date date) {
return new SimpleDateFormat("HH:mm:ss").format(date);
}
/** * Date 转换 MM.dd * * @param date * @return */
public static String date2MMdd(Date date) {
return new SimpleDateFormat("MM.dd").format(date);
}
/** * Date 转换 yyyy.MM.dd * * @param date * @return */
public static String date2yyyyMMdd(Date date) {
return new SimpleDateFormat("yyyy.MM.dd").format(date);
}
/** * Date 转换 MM月dd日 星期 * * @param date * @return */
public static String date2MMddWeek(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
return new SimpleDateFormat("MM月dd日 星期").format(date) + WEEK[dayOfWeek - 1];
}
/** * Date 转换 yyyy年MM月dd日 星期 * * @param date * @return */
public static String date2yyyyMMddWeek(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
return new SimpleDateFormat("yyyy年MM月dd日 星期").format(date) + WEEK[dayOfWeek - 1];
}
}
